Erosividade da chuva no município de Juramento-MG no período de 1987 a 2019

Abstract

The knowledge of the ability of erosion of rainfall in a given region, allows a better orientation for the adoption of best management practices and soil conservation, always aiming to reduce the impacts of water erosion. Thus, the objective of this study was to calculate the rate of rainfall erosivity (R) by the index EI30, aiming at a better planning for decision-making in the agricultural sector. For the performing of the work was used a series of historical data between the years of 1987 to 2019, relating to the precipitation in the municipality of Juramento-MG. The municipality of Juramento - MG it is classified as having moderate to strong erosivity with an erosivity factor (R) of 7.216,0 MJ mm ha-1 h-1. The higher erosivity indexes were found in the months of december 7.912,8 MJ mm ha-1 h-1 and january 10.289,2 MJ mm ha-1 h-1, coinciding with the wettest months 614,1 and 614,5 mm, respectively, and the months of july and august showed the lowest rates of rainfall erosivity 4,9 MJ mm ha-1 h-1 and 8,0 MJ mm ha-1 h-1, respectively, these being the months of lower rainfall 2,1 mm and 3,0 mm.